Fire extinguisher



Sept= 11 1923. g@

A. B. PHISTER FIRE EXTINGUISHER @MMM @AMV I 1,467,980 A. B. PHISTER l FIRE EXTINGUISHER 3 sheets-sheet Filed JuneV 16 1919 wir .SelSt. 11 1923.

W7 i 7 m W'Ltz esses: @ma

y Patented Sept. 11,' 19123.

Extinguishers,

neutra sartene ALBERT B. PHISTER, OF

FR@ THOMAS, KENTUCKY, ASSIGNDR T THE PHISGEE MAIQ'UFACTURXNG COMPIFY, 0F CINCINNTEI, GHIOQA CORPORATION UF OI.

FIRE EXTINGUISHIER.

' specitcation.

My invention relates to chemical fire-extinguishers. Its object is to provide devices of this character which will be of ample ca'- pacity yet readily portable and convenient to operate7 and which will be more durable and dependable.

, My invention consists in the combination parts and in the details of construction :rnd arrangement of parts as will hereinafter beniore fully described and claimed.

In the drawings:

Figjl isa front elevation of bodying my invention;

Fig. 2 is a side elevation of the same;

Fig. 3 is an enlarged plan yview vof the same; A y

Fig. 4 is a. cross-section of the upper part ofthe device on afvertical plane corresponding to the line 4-4 of Fig. 3;

Fig. 5is a cross-section on a vertical plane corresponding tothe line -v 5-5, of Fig.. 3, showing the upper and lower/parts of the device but represented aswith middle parts broken away and omitted for lack of space;

Fig. 6 is a cross-section of an upper part of the device on a vertical plane corresponda device erm- Y ing to the line 6-6 of Fig. 3; and

Fig. 7 is a similar section on a plane corresponding to the l1ne 7-7 of Fig', 3.

The dev1ce which I disclose herein as an example of my invention includes a tank 1 which is made up of an upright tubular shell 2 having an upper head 3 and a lower head 4 which are closely fitted in the respective ends'of the shell 2 and fixed thereto in an air-tight manner, as by soldering or welding. About halfway in from the shell 2 to the centers of the respective heads 3 and fl on their lower and upper sides, respectively, inside the tank 1 are annular iianges 5 and 6 preferably integralwith the respective heads and concentric with the shell 2. An inner tubular shell 7 has its upper and lower ends fitted in these flanges 5 and 6 respectively and/made air-tight therewith as by soldering or welding. The lower head 4 has the depending rim 8 with the basetom of this socket 12 ,ing down through it y casing 13,

lsocket 12 The outermost compartment 14 is for liq- .applicatioii' filed fune 16, 1919. Seria! 110.3045382 flange 9 extending out all around from its lower edge. 'lhis elevates the main part of the lower headv 4 and in the center thereof is the depending cup 10 opening upwardly. The rim 8, iiange 9 and this cup 10 are all preferably integra-l with the lower head 4e; these parts being conveniently made in the form of a' casting. The upper head 3 has in its center the upstanding hub 11y which has the concentric socket 12 opening from its top and threaded for some distance down from the top. In the center of the botthe head 3 has an open the upper end4 of the tubular pump casing 13, the lower end of which fits side the central cup 10 of the lower head 4, This pump casing is made air-tight with the heads by soldering or welding or the like the same as the shells 2 and 7'.

his construction with successive concenltlriod tubes fixed to the upper and lower ea s compartment 14 enclosed between the outer tank shell 2 and the shell 7 and upper and lower heads 3 and 4; another annular compartment 15 between the inner shell 7, pump casing 13 and upper centrally, the pump compartment within the closed at the bottom by the cup 10 and opening upwardly through the of the hub 11 in the head 3.

uid; the next compartment 15is for compressed air; and the pump that comprises the casing 13 in the center is for compressing the air into the middle compartment 15.

This pump comprises the tubular plunger-rod 16 which passes down into the pump casing 13 through the hub 11 at the top. This tubular rod 1G is of diameter consid-V erably less than that of the inside of the pump casing 13 so that a considerable annular space 17 is left around the rod 16 inside the casing 13. The internally threaded socket 12 has screwed into it the bushing 18 which ts closely around the plunger-rod 16 with an upper hexagonal part for conveniently turning it. A'packing washer 19" is lixed against the bottom of this bushing 18 by means of a ring 20 fastened |to the bushing 18 by screws 21 passing up through the ring 20 and washer 19 into the bushing. This washer 19is made of Soma closely into-which fits tightlytightly inand lower heads; and,

1s `very substantial; and it will be' v vseen that it provides an air-tight annular clinging flexible material such as rubber, or preferably leather, and its radial cross-sec tion is angular, having a horizontal outward extending part that comes between the ring andthe .bushing and inner depending part that lits tightly around' the smooth outer surface of the tubular plunger-rod 16.

The ring- 20 has 'an inwardly projected an\ vnular flange 22 at its bottom coming under the washerr4 19 close to the plunger-rod 16. This ring y2 0 thus disposed is designed to reinforce uand'protect the flexible packing kns washer 19.' It does not entirely fill the lower unthreaded part' of vthe socket'12 but leaves ample space therearound which communicates Afreely with the annular space 17 in the pump casing around the plunger-rod.

The lower end of this tubular plunger-rod r16 has the plunger'23 fixed to it by having ra reduced upper end part 24 of the plunger fitting snugly in its end and suitably 'se` `cured thereto in an air-tight manner as by soldering or welding. Immediately below this `'there is the radially projected annular bead 25 on the plunger 23, and extending' from the center ofthe bottom of the plunger is the neck 26 which is lexternally threaded and has screwed on it the nut 27 which holds up against the bottom of the' 'plunger 23, around' the neck 26,*the cupwasher 28 with its sides `extending up and surrounding the plunger 23 with their up? per edges coming'close under the bead 25.

Thi'sbead 25like theA ring 20, isfor the p-urposeofprotecting the adjacent flexible washer and leaves a considerable annular space. around it next to the pump casing y wallg'the cup-washer 28 fitting vtightly out these two parts,` and the lower threaded part has Screwed int-o it the plug 3l which has in its lower end. a transverse slot for engagement of a screw driver or the like and has in its upper end the central opening .receiving the lower end of the stem of the check valve 32 which seats upwardly against the seat 30, preferably having a facing 330i rubber or the like to directly en-b gage with "the seat 30 and being pressed up .by a spring 34 coiled around', its stem between the plug 31 andthebottom of the f -valve. y

' et 'one side and joined to the hub by afshort The upper head 3 in addition to the cen trai hub 11 has the shifting-valve body 35 radial rib. Directly adjoining this body 3 5 i.sxthe llingneck `36 which has its opening down'into. the liquid compartment 14 intera- Vinward nally threaded and closed by a plug 37 screwed therein. i p

A checlovalve socket 'extends down into the rib and has, leadin from its body downwardly and then ra ially into the", hub socket 12, a port 38; At' the junction of the port 38 and `check-valve socket an annular shoulder forms the valve seat 39 down upon which seats'. the check valve 40 witha rubber or leatherlacng 41 against the seat 39 and' -having its stem extending up into the central opening of the plug 42 that is screwed dowii linto the internally threaded upper part ot'. the check-valve socket and 'has a slot in its upper end to receive a screw driver or thelike.v This valve may:

be depended upon to seatv with the help of gravity and ordinarily will not require 'any spring like the check valve 32 in the plun-iV ger 23, to which it is otherwise very similar.

' The valve body 35 'has the downwardly tapered interior 'receiving the correspond.- ingly tapered plug 43 which has a central opening from top to bottom down through which passes a stud 44 which is screwed down into the head 3 at the center-of the botto-m of the interior of this valve body and which has screwed `on to its upper end a nut 45 with a. washer 46 keyed on between it and the top of the valve plug to thereby hold the plug tightly down in the body. This top of the plug has a radially extended rim 47 most of the way around but discontinued at one side to leave a flat 48 (Fig. 3) and has extending radially from another side a=short handle 49 for turning the plug A short port 50 "leads trom. the chccksvalve socket above the check valve-40 into the interior ot the shifting-valve body. opposite sideofithis valve body againstlthe filling neck 37 is a'short boss 51'- in. which a port 52 is formed leading from the interior of the'shift-ingvalvebody horizontally to a port 53 that leads down through the head 3 into the liquid'compartment 14. The horizontal port 52 is Apreferably bored from the' outer ond ot the boss 5l and then vits outer partclosed by a filling 54.; j I y The head 3 also'hasthe. air-valve body 55 over near one side and to the rear of the shifting valve; and has theoutlet-valve'body 56 over to the other side at the rear. These valvebodies 55 and 56 are alined across the At the head and are elongated in this direction to receive their valve members horizontally.

In the air-valvebody is the horizon-tal valve j chamber 57 from the outer end of Vwhich a pori'J 58. leads horizontally to'anothen port 59 (Fig. 4)' that nclines .downwardly and through. thebottom of the `:headi` 3 into theair compartment 15.. Like thei port 52, theport,58 is preferably bored from the'4 outerend ofthe body 55 into the chamber 57 and then has its outer end closed by a filling 60. A. frib 4extends from tli'eai-r-valve of the shifting-valve body.

The shifting-valve plug 43 has a segmental slot 62 extending a little more than onequarter way around it in such relation to the l flat 48 at thetop of rod 65 of 'somewhat greater exclusion of the port the plug that when this flat 48 is next to the filling neck this slot 62 connects the vport 52 with the port 61 to the exclusion of the port 50; but if turned about one-quarter way around, the slot 62 connects the port 50 with the port 61 to the The air valve 63 is a pin with a tapered end fitting in a conical seat 64 where the port 58 leads from the chamber 57, and joins its cross-section overpast the port 61; this rod fitting snugly inthe chamber'57, and the body 55 hav.- ing a stuiiing-box 66 containing packing compressed around the rod by the gland 67 which is screwed into the stufiingbox in a usual manner. i

The outlet-valve body 56 has its interior opening tapered from its outer end inwardly, receiving the correspondingly tapered outlet-valve plug 68, having fixedato its end the handle 69 which is stopped in depending position by engaging the side of the tark'as shown, and extending through the inner end of the body 56 with anexternally threaded neck 70 on which is a keyed washer I71 and a lock nut 72, holding the tapered plug 68 tightly in the body 56 in ausual manner.

The end of the rod 65, which is coaxial with the plug 68 has a flat bit 73 on its end, and there is a transverse slot 74 in the neck 70 adjacent to the end of the rod; this slot receiving the flat bit 73, which thus causes the air-valve rod 65 to turn with the outlet- Valve plug 68. Next to the end part 73 the air-valve rod 65 has the external threads 75 and a casing 76 fits down over the just described parts at the inner end of the outlet-valve body 56 and is suitably fixed to said body and has a thickenedend part through which the threads 75 of the airvalve rod 65 arel'screwed; whereby this casing 76 lacts as a fixed nut for the screw whereby turning thereof along,r with the outlet-valve plug forces the air valve 63 toward or from 'its seat 64. The key 74 is considerably shorter than slots so that there can be this lengthwise movement of the air valve without any corresponding lengthwise movement of the tapered outlet-valve plug.

The outletvalve body 56 has the port 77 leading from its tapered interior down through `the head 3 and an outlet tube 78 has its'upper end screwed into the head 3 in the lower` end of this port 77; this outlet tube 78 extending. down very close to the its space in the lower head `4; or bottom of the ypartment 14. Another port.79 versely through one side of the body 56 with a nipple 80 extending forwardly from its outer end; and over the front end of this nipple is slipped the end of the di charge hose 81, which is preferably made o metal, coiled down around the outside of the tank 1, having its nozzle 82 held by a spring clip 83'fastened on the side of the lower-head flange 8 close to the base flange 9..

liquid comleads trans- The outlet-valve plug 68 has the seginen-r"` tal slot 84 o'extending a little over `quarter way around and so positioned relative to the connection with the air valve (i3-that when this air valve 63 is seated this slot 84"will beat the lower rear lower port 77; and the opening of the outlet valve 1s effected by turning it forwardly or,

side of the plug over the 6 so that a' three-quarter turn is needed to bring this slot 84 around where it will conneet the lower port 77 with the port 79 to the hose 81. The pitch of thefthreads- 75 is enough so that this three-quarter turn will sufliciently open the/air valve 63'and at the same time this pitch of these threads 75 is kept moderate enough so vthat a very strong pressure may be brought to bear in seating the air Valve 63 byr the reverse three-quarterA turn of the plugy 68v in closing the outlet valve.

The pump plunger-rod' 16 has a handle formed byV a smaller tube 85 passed transversely through openings in the walls of the upper end part of the rod 16 and fixed therein by means of a bolt 86 passing through both tubes 85 and 16 at right angles tothem. y The apparatus has a handle 87 that comprises the main transverse part with the .side members 88 curving downwardly and forwardly with vtheir lower end partsfixed to lugs 89 at opposite sides of the rear of the upper head 3. This handle 87 serves for hanging the apparatus up and also for carrying it. A

The upper head 3 like the lower head 4 is preferably a casting with not onlythe lling neck flange 5 and central hub 11 but the filling neck and the three valve bodies and connecting ribsand handle lugs formed inn removed; it being underwhile the plug 37 is stoody-,Ithatcthe liquid should vinclude `such felements asnwi'll, 2. in contact with air, and

. the shifting-valve plug to be turned through l the necessary angle to connect the ports'() `and 61. :Thisat the-same time closes the port 52 so thatuthere will be noleakage l' from the air, compartment 15 into thefnovv opened lliquid* compartment. lAnd it perl,mits air to` now, be forced by the pump :through theport 50,' slot 62, porthehamber 57 and ports and 59 into the air comi 'pertinent 15l v been turned l ani-'opening additional to thatof ,the filling 11;).e('11{. i i, 'i r y. J ,i i i l The. riempire iS den@ by plunger andfother parts up` and `down in 13.4 Infyvorking this pump the appa- NI (isheldfistationary by thefeet of they A@operator bearingpn. the base flange 9. `The plunger ,check valve yields on the, upwa d :i @eng ratus let valve-now .andtlus opening of the outlet valve is lonly f I Imoving the tu-A .its attached bular plunger-rod 16 and 'stroke and admits atmospheric airunder t e l I tplunger Wh'ch on the downward stroke will be' forced.IV past the cup Washer 28 in to the .Compartment 17 around the plunger-rod 16 "iiifthe'casing'l `Then at the next upward ."strokefthe `expansion ofthe cup Washer 428 ".war

ivi'll'c'ause this air, to be forced Afrom the Vcompartmentl? through the lower part of:

- 'the'hilb` socket 12 and the port138, raising, 40r' the. cheok'valve 40 and passing through the poirth0 andthe other passages` .by Way of he air valv'into the air lcompartment 15 as .-f justI 'before described. i The checklfvalvel 40 4vfofcurseprevents 'back-flow aslithe pump miaiiig'h" past a 1checkI valve i `plungerpassesdownward. lThis pump, ad-

thr'ough' its hollow plunger-rod n the plungerv on the up- 'd`stroke and then admitting this'same air past its cup washer on the downward stroke, thus has a two-stage operationz' It is thusl possible to' manually raise the air t a the air to a pressure ofabouttiro hundred pounds. I '-tyyhaving the4 air and liquid compartments separate 'Vitvis'possible tov have avery fpractical.- air` valve which -will not be c orroded asxvhen it -isf exposed 'to the liquid.

This'permitsthe air 'underhigh pressure to y bejretainedfor anindeiinite period. This permits ofthe-storage of 'a relativelyv large quantity of air 'Without having the, apparawieldy. u

if the outlet-valve plughas g` to open the air valve 63.11v It is, ofcourse, permissible toopenthis'outl because the port. 52is closed.

"'.to properlyl openv the shifting` valve before the in' the tank 15".l A pump const-ructed this Wayhas been operated oneniantoieompress tus ofy such-bulk orweight as-tobe unl-Vv When the liquid compartment 14 hasbeen filled with the proper liquid and suilicient air 'has been compressed intoI Atlie air compartment, the outlet valve is closed; which also closes the air valve. It is nonv perinissible to turn the shifting valve back to its norconnectiony cut olibetween the air cf'iinpart ment andthe liquid compartment, in which condition'it `wouldA not operate eventhongh the outlet andv air .valves werejfopen.r The personu opening the device'pfivill not readily' forget to insert the plug 37 andiscompelled doing this.

To .use the apparatus when thus properly prepared it is necessary only to carryit to'4 the fire, unwinding the hose 81j'while4 doing so, and Atlien with the' hose directed toward the fire, swing the handle 69 throughlits th-reeLquarter turn fwhich will simultaneously admitlthe compressed' air onto'the liquid coin'iningledair and While lcertain constructioiia-l details are deemed.preferable in lconnection lWith my intention, and :I have "shown and described these -ratlicr specilim-llyv in elucidating the construction and use of my invention, asis required, l do not'wisli to be understood as beingl limited to4 such precise showing and ilescri ptiqi i,'but having .thus fully described rmy inventiomyliat I claim as newvand desire to secure lbyLetters Patent is: A

1. lnza fire-extinguisher, a liquid .compartment, an yauf..,compartment, aireforcing means, anairH valve communicating with "said ain'compartment, a shifting` valve to' open communicationeither between said air valve and said liquid compartment to the exclusion of said. air-forcing means or between opencbmmunieation either between said air.y

valve and said liquid compartment to the exclusion ofsaid air-forcing means or be Ween said au' viilveand said'am forcing means 4to and openthe outlet through the hose forfly `chemicals to escape onto the `exclusion of said* liquid compartmenu:

said liquid compartment `having a filling openingfa" closure "for said opening, and

means an air valve i Leonesa @j means whereby said closure is prevented from closing said opening except wheiisaid shifting valve opens communication between said air-valve and said liquid compartment, and" meansl tor controlling' discharge of liquid i'roin said liquid compartment.

3. In a lire-extinguisher, a liquid comparte nient, au air compartment, air-forcing comi'niinicatingir with said air compartment, a shitting valve to valve and said liquid compartment to the exclusion of said air-forcing means or between said air valve and said air-forcing means to the exclusion of said liquid compartment, said liquid compartment having a filling opening, a closure Jfor said opening, and means whereby said closure is prevented from closing said opening except when said shifting valve opens communication between said air valve and said liquid compartment, and means operated simultaneously with' said air valve for controlling` discharge of liquid from said liquidcompartment.`

In a fire-extinguisher, a liquid Vcompart ment, an air compartment, air forcing means, an air valve Jfor admitting air under pressure from said air compartment directly into contact with a liquid in said liquid compartment for extinguishing operation but excluding such air from said liquid compartment -lietween operations. whereby said air valve is relieved from 1Forced exposure to said liquid between operations, a shifting valve to open communication either between said air Valve and said liquid compartment to the exclusion of said air-forcing means or between said air valve and said air-torcing means to the exclusion of said liquid compartment, and means operated simultaneously with said air valve for controlling discharge of commingled liquid and air from said compartment.

' 5i In a ire-extinguisher, a liquid coinpartment, an air compartment, air forcing means,` an air valve for admitting air under pressure from said air c'oiniiartinent directly intocoutact with a liquid in said liquid com-4 partment 'for extinguishing operation but excludlng such air from said liquid coiiipait-l 4nient between operations, whereby said air valve is relieved i'ioni forced exposure to said' liquid between operations, a shitting valve to open communication either betwe yn said air valve and said liquid compartment tp the exclusion of'said airiorcing means or hetween said air valve and. said iii'tbi'cing means to the exclusion et said liquid conipirtineiit, said liquid compartment-having a opening. a closure for said opening, ns whereby said closure is prevented r-'i closiinfy said opening,r except when said Vingr votre opens communication lbetween air-valve and said liquid compartment, and Iineens 'for controlling: discharge or coniliquid open communication either between said air mingled liquid and air from said compartnient. f

6.1m a lire-extinguislier, a liquid lcornpartment, an' air compartment, air forcing -means, an air valve for admitting air under -pressure from said air compartment directly into contact with a liquid in said liquid compartment for extinguishing operation but excluding such air from said compartment between opeiations, whereby said air vavle is relieved from forced exposuife to said liquid between 0perations, a shitting valve to open communication either, between said air valve and said liquid compartment to the exclusion of said air-forcing means or between said air valve and said air-forcing means to the exclusion of said liquid compartment, said liquid compartment having a filling opening, a closure for said opening, and means wheres.;v said lclosure is prevented from closing said opening except when said shifting valve opens communication' between said aiivvalve and said liquid compartment, and means operated simultaneously with said air valve for controlling discharge of com` mingled liquid and air from said compartment.

7. ln a fire-extinguisher, an outer shell, an upper head and a lower head in said shell, ari inner shell extending from one of saidheads to the other inside said outer shell, these shells being closed by said heads, a pump casingy inside said inner shell, closed at one end by said lower head and opening through said upper head, pumping means in .said

casing, air-outlet means in said upper head from said casing into said inner shell and from said inner shell intol said outer shell, a

check valve in this means opening from said pump casing, and air-and-liquid-outlet means in said upper head, leading from said outer shell.

8. ln a fire-extinguisher, an outer shell, an upper head and a lower head in said shell, an inner shell extending from one of said heads te the other inside said outer shell, these shells being closed by said heads, a pump easing inside said inner shell, closed at one end by said lower headaiid openingl through said upper head7 pumping means in said casing, said upper head comprising' a shitting-mire body and an air-valve body, and havinga port :t'roin said pump casing into said shitting-valve body with a check valve opening from said pump casing, and a port from said shitting valve body into said air-valve body and poits from said airvelve body and said shittingiN 'alve body into said inner shell and said outer shell, respectively, a sliitiiipiiiili'e element in said shitting-valve body to connect either said pump-4 casini; pori or said outer-shell port with said air-valve port'to the exclusion foi: ,the

other port, an air valve element in saidarvalve'body to close said inner-casingport, and air-and-hquid-outlet means in said f upper head, leading from said outer shell.

a pump casing inside said inner shell, closed at one end bysaid lower head and opening through said upper head, pumping means insaid casing, said upper head comprising a shifting-valve body andan air-valve body,

' and having a port Vfrom said pump casing into said shiftingvalve body with a checkvalve opening fro said pump casing, and a port from said shifting valve body into said air-valve body and ports from said air-valve body and said shifting-valve'body into said inner shell and said outer shell, respectively, a shifting-valve element in saidA shiftingvalve body to connect either saidpump-cas ing port or said outer-shell port with said air-valve port to the exclusion of the other port, an air valve element i-n said air-valve body to close said inner-casing port, said upper head comprising a filling neck adjacent to said shitting-valve body, and a closure for said neck, said shifting-valve element having means obstructingT said closure when connectingT said pump-easing port and said air-valve port, and ai1a1ulliquidout let means in said upper hea-d, leading from said outer shell.

10. In a lire-extinguisher, an outer shell.

an upper head and a lower head in said shell,

an inner shell extending from one of said heads to the other inside said outer shell, these shells beiner closed by said heads, a pump easing inside said inner shell, closed at one end by said lower head and opening through said upper head, pi'lmping means in said casing, said upper head comprisingT a shifting-valve body and an air-valve body, and having a port from said pump casing into said shifting-valve body with a rcheck valve openinbT from said pump casing, and a port from said shifting-valve body into said air-valve body and ports from said airvalve body and said shifting-valve body into said inner shell and said outer shell, respectively, a shifting-valve element in said shift-v ing-valve bodyto connect either said pump Ami `casing port or said outer-shell port with said air-valve-port to the exclusion oi the .other port, an airvalve element in said air- Valve body to close said inner-casing,r port,

' said upper head comprising`an outlet valve body with a port from said outer shell, a

.screw to open said air-valve element, a

rotary valve 'plug in said outlet-valve body coaxial with said screw, and an operative connection between said plug and said. screw whereby said plrgopens said airlv'alvewhen it opens said port of said outlet-valve body.

11.- Ina dre-extinguisher, an outer shell,` an upper head and a lower head in said shell, an innerV shell extending from one of said heads to the other inside said outer shell, these shells being closed by said heads, a pump casing inside said inner shell, closed at one end by said lower head land opening through said upper head, pumping means in said casing, said upper head comprising a shifting-valve body and an air-valve body, and having a ort from said punip casing into saidshifting-valve body with a check valve opening from said pump casing, and a port from said shifting-valve body'into said air-valve body and ports from said airvalve body and said shifting-valve lbody intov said inner shell and 'said outer shell,.resp'ec tively, a shifting-valve element in said shifting-valve body to connectieither sind pump easing port or said outer-shell pori-,with said air-valve port to the exclusion of the^`other port, an air-valve; element in s liidair-valve body to close said inner-cas`ng"p6rt, said upper headcomprising a filling neck adjacent to said shifting-valve*body/a closure for said neck, saidfshifting-valve element having means obstructing said closure when u connecting said pump-casing port and said air-valve port, said upper head comprising an outlet valve body with a port from said outer shell, a screw to open said air-valve element, a rotary valve plug in said outletvalve body coaxial with said screw, and an l 12. In a fire-extinguisher, an outer shell, an upper head and a* lower head in said shell, an .inner shell'extending from one of said heads to the other inside said outer shell, these shells being closed by said heads, a pump casing inside said inner shell, closed at one end by said lower head and opening through said upper head, a plunger, sliding in said easing, a plunger rod on said plunger extending out of the other end of said easinotand having an air space around it in said casing and an air inlet passage to--sai'd piunger inside ,said plunger rod, .a check valve opening from said air4 inlet passage to said space between said plunger and said closed end, acheck valve opening'from this space to said space around `said plungerrrod, air-outlet means in said upper head from said casing into said inner shell andA from said inner shell, into said outer shell, a check valve in this means opening from said pump sa1d casing and-an closed end, a check`valve openin from this y said upperhead comprisin space-to said space around said p un'ger rod, a shiftingvalve body and an air-valve bo y, and havin a port from saidL pump casing-into said shifting-valve body with a check valve opening an `upper from said pump casing,

vshifting-valve body into erf said outer-shell'port with Valve 'port to the exclusion of the other ,f

"port, an air valveelement in said air-valve body to close said inner-casing port, andI airla pump casing inside anda portfrom sai shifting Valvebody into said air-valve body and ports from saidair-valve body and said said .inner shell and said outer' shell, rspectively, a shitting- Valve element in said shifting-valve body to" connect either said pump-casing port said airsaid upper head, from said outer shell. 'na fire-extinguisher, an outer shell, head and a lower head in said shell, an inner shell extending from one of said heads to thev other inside said outer shell,vthese shells being closed by said heads, said inner shell, closed at one end by said lower head and opening through said upper leadin in said casing, a plunger rod 0n said plunger extending out of the other end of said casing and having an air space around it in sai casing and an air inlet passage to said plunger inside ,said plunger rod, a check valve opening from said airA inlet passage to said space between saidy plunger and said closed end, a check valve opening from this space to said'space around said plunger rod, said upper head comprising a shifting-valve body and an air-valve body, and having a port from said pump casing into said shift- 1ng-valve body with a check valve opening from Said pump casing, and a port: from said shifting valve body into said air-valve body and ports from said air-valve body and said shi'ftingwalve body into said inner shell and said outer shell, respectively, a 'shiftingvalve element in said shifting-valvebody to connect either said pump-casing port or said outer-shell port with said air-valve port tothe other port, an ait' valve element in said air-valve body tolcldfse said inner-casing port, said upper head ebmprising a filling neck adjacent to said slhiftin valve body, and a closure for said neck, said shifting-valve element having means obhead, a plunger sliding at one end byv said lowerhead and opening through said upper head, a plunger sliding `in said casing, a plunger rod on said plunger extending out of the other end of said casing and havino an air space around it in 90 said casing and an air inlet passage to said plunger inside said plunger rod, a check valve opening from said air inlet passage to said `space between said plunger and said closed end, a check valve opening from this space to said space around said plunger rod, saidupper head comprisin `a shifting-valve body and an air-valve bo y, and having a port from said pump casing into said shifting-valvev bodywith a check valve opening .90 rom said pump casing, and a port from said shifting valve body into said air-valve body and ports from said air-valve body and said shifting-valve body into said inner shell and said outer shell, valve element in said shifting-valve body to connect either said pump-casing port or said outer-shell port with said air-valve port to the exclusion of the other port, an air valve element in said air-valve body to close said X00 inner-casing port, said upper head comprising an outlet valve body with a port from said .outer shell, a screw to open said air-,- valve element, a rotary valve plug in saidlv outlet-valve body coaxial with said Screw and an operative connection between sai plug and said screw whereby said plug opens said air valve when it opens said port of said outlet-valve body. 16. In a fire-extinguisher, an outer shell, an upper head and a lower head in said shell, an inner" shell extending from one of said heads to the other inside said outerV shell, these shells being closed by said heads, a pump casing inside said inner shell, closed at one end by said' lower head and opening through said upper head, a plunger slidingfiu said casing, a plunger rod on said plunger extending out of the other end of said casina andhaving an air space around it in said casih'ggand an air inlet passageto said plunger inside said plunger rod, a check valve opening from said air inlet passage to said space between said plunger and said closed end, a check valve opening from this space to said spacearound said plunger rod. said upper head comprising a shifting-valve body and an air-valve body, and having a port from said pump casing intofsaid shiftm0 respectively,` a shifting- 95 -body and ports from .ing-valve body with a 4check valve ppening valve body 'to connect either said pumpcasing port or said outer-shell port with said air-valve port' to the other port anali' valve element iii said air valvebody to close said, inner-casing r port, said upper head comprising a filling neck adjacent to said shifting-valve body,

a closure for said neck, said shifting-valve d a diifting valve either connecting the liquid Cbs'tructing sai closurewhen connect'ng said pump-casing port and said .air-valve port, said upper head comprising an'outlet valve body with a port 4from said outer shell, a screw .to open said air-valve element, a rotary valve plug in said outlet valve body coaxial with said screw, and an operative connec'tion loetivoen said plugv and said screw whereby said plug opens said air valve when it opens said portvof said outlet-valve 'body.4 17. In a tire extinguisher, a tank to hold a fire extinguishing liquid,'a tank to hold element having means compressed air to expel the liquid` anda the compressed lair the casing of said pump to pump air into tank, said tanks and pump having an upper single end enclosing i piece for the respective tanks and pump casing and a lower single and enclosing piece for the respective tanks and pump,

exclusion of fthe such shape substantiall as set forthk Aand for the purj` poses speci e 4 u 18. Ina `lire-extinguisher, a-.tank to hold a 'fire-extinguishing liquid and a tank to hold compressed air a tanky to hold a tank "to .hold

compressed airto expel the liquid, pumpV to pump airintothe compressedfair tank,

tank and pump or connecting the two-tanks, an air valve cutting said shifting valve off to expel the liquid,'a 44o i pump to pump-air into the compressed-:air l both tanks a'iidsaicll comprising anjextension forming from fthe air tank, and a filling plug fori the lvalve being of liquid tank, said shifting l can not be placed in its proper position unless said shifting valve is in such position How from the air tank through-"said, shift4 ing valve into theliquid tank instead of through said shifting valve into said pump. 20; Atank end, a portion of a rpump' end, 'stop cock body, air valve'pbody andshifting valve body, allformed oa single piece;

. ALBERT PHISTER. Witnesses: t e l JAMES N; RAMsEY, CLARENCE ]Eizmiw.y

that said .liquid-tank lling plug ythat when said air valve 'is opened air will 

